Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 791 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🌈 In VIBGYOR, what number colour is violet?
2. 2.🧺 Three of these are needed for the dissolving test. Which one is NOT needed? (a) cold water (b) two clear glasses (c) sugar (d) a magnet
3. 3.🔍 Which is the odd one out? (a) sugar (b) glucose powder (c) chalk powder (d) food colour
4. 4.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? What do we do with “the kind of sugar”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🔮 Predict: you gently drop a coin into the tower. Where does it end up? (a) on top of the oil (b) in the oil layer (c) in the water layer (d) at the very bottom
6. 6.🥄 Which of these dissolves in water? (a) sawdust (b) sand (c) baking soda (d) chalk powder
7. 7.🌦️ To see a rainbow in the sky, where must the Sun be? (a) under the ground (b) straight above you (c) behind you (d) in front of you
8. 8.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “the cling film cover”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.True or false: honey is not needed for the density tower. (a) True (b) False
10. 10.💧 Dip a rubber eraser into coloured water. Does the water climb up it? (a) water does not climb (b) water climbs up it
11. 11.🧺 Do we need a mirror for the card-on-a-glass trick? (a) needed (b) not needed
12. 12.True or false: a clear glass of water is needed for the water rainbow. (a) False (b) True
13. 13.🥄 Which of these does not dissolve in water? (a) sand (b) glucose powder (c) baking soda (d) food colour
14. 14.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is what we measure? (a) the amount of colour (b) the length of the stem (c) time for colour to show (d) the amount of water
15. 15.🧺 Which of these is not needed for the coloured flower experiment? (a) a white flower (b) food colour (c) a balloon (d) a few hours of waiting
16. 16.🧺 Do we need vinegar for the balloon rocket? (a) not needed (b) needed
17. 17.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? Which of these is the one thing we change? (a) the way we turn it (b) how full the glass is (c) the same glass (d) the same card
18. 18.🛟 Which rule keeps you safe when working with sunlight? (a) stare at the Sun (b) look at it through glass (c) never look at the Sun (d) look at it in a mirror
19. 19.⚖️ Fair test — does the amount of water in the glass change how bright the rainbow is? True or false: the same glass is what we measure. (a) True (b) False
20. 20.💧 Which of these does not let water climb? (a) a strip of cloth (b) a paper towel (c) a steel spoon (d) a cotton thread
21. 21.🛟 Does an empty capped bottle float or sink in water? (a) sinks (b) floats
22. 22.🍯 Which of these is denser than water? (a) an ice cube (b) cooking oil (c) a ping-pong ball (d) a pebble
23. 23.🔮 Predict: an empty capped bottle floats. What happens if you fill it with sand? (a) it turns blue (b) it melts (c) it sinks (d) it floats higher
24. 24.🛟 What should you do with popped balloon pieces? (a) chew them (b) give them to a baby (c) keep them in your mouth (d) throw them away safely
25. 25.⚖️ Fair test — does a bowl in the sun make more drops than a bowl in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.💧 Which of these does not let water climb? (a) a flower stem (b) a piece of chalk (c) a rubber eraser (d) a sugar cube
27. 27.🛟 Which of these sinks in water? (a) an ice cube (b) a glass marble (c) a piece of thermocol (d) a dry leaf
28. 28.🔮 Predict: you squeeze an empty plastic bottle with its cap screwed on tight. Why is it hard? (a) the bottle is magnetic (b) the cap is sticky (c) air inside pushes back (d) water is hiding there
29. 29.🛟 Where is a safe place to drop the helicopter from? (a) a wobbly chair (b) a roof edge (c) a high window ledge (d) from your raised hand
30. 30.🍯 Is a ping-pong ball denser or less dense than water? (a) denser than water (b) less dense than water
31. 31.🛟 Why is a plastic cup safer than a glass for small children here? (a) it is hotter (b) it is magnetic (c) it will not break (d) it is heavier
32. 32.🥛 Does a drinking straw work by air pressure or by magnetism? (a) magnetism (b) air pressure
33. 33.True or false: a battery cell is not needed for the balloon rocket. (a) True (b) False
34. 34.🥛 What holds the card up against the upside-down glass? (a) glue on the card (b) a magnet (c) the cold water (d) air pushing up
35. 35.📘 Every push has an equal push in the opposite direction. Which toy shows this? (a) a fridge magnet (b) a sundial (c) a mirror (d) a balloon rocket
36. 36.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a small cup (b) ice cubes (c) a big bowl (d) a mirror
37. 37.🧺 Which of these is not needed for the dissolving test? (a) warm water (b) sugar (c) cold water (d) cotton wool
38. 38.🧺 Which of these is needed for the balloon rocket? (a) turmeric powder (b) yeast (c) sticky tape (d) vinegar
39. 39.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? What do we do with “the kind of flower”? (a) we change it (b) we keep it the same (c) we measure it
40. 40.🔍 Which is the odd one out? (a) a pebble (b) honey (c) a coin (d) a cork

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids